CN105628302A - Center self-finding mass center calibration device and method - Google Patents
Center self-finding mass center calibration device and method Download PDFInfo
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- CN105628302A CN105628302A CN201410635838.8A CN201410635838A CN105628302A CN 105628302 A CN105628302 A CN 105628302A CN 201410635838 A CN201410635838 A CN 201410635838A CN 105628302 A CN105628302 A CN 105628302A
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Abstract
The invention provides a center self-finding mass center calibration device and a method. A safety protection device is provided with four identical support pillars which are arranged in a square-shaped mode; a mass center measurement device to be calibrated is arranged in the middle of the four support pillars; a mass center positioning disc is laid on the mass center measurement device to be calibrated, wherein the mass center positioning disc is provided with multiple notches, and a lower half part of a force-applying ball can be laid in any of the notches; a center self-finding structure is arranged above the mass center positioning disc, wherein the middle of the center self-finding structure is a supporting structure in an orthogonal cross shape, and each end part of four support legs of the center self-finding structure is connected with a lever and each lever is loaded with weights; when the weights are loaded, the four support legs of the center self-finding structure are laid on the four support pillars of the safety protection device. During a calibrating process, the center self-finding structure is laid on the force-applying ball. The method and device can be applied in calibration of a mass measurement device using multi-point weighing method.
Description
Technical field
The invention belongs to mechanics field of measuring techniques, be applied to centroid measurement equipment Alignment, be specifically related to a kind of from seeking heart barycenter calibrating installation and method.
Background technology
Barycenter is very important parameter in research, production process, and its coverage includes flight track and gesture stability, accuracy at target etc. Accordingly, it would be desirable to establish corresponding special test equipment, barycenter parameter is tested, to ensure it conform to designing requirement. Accurately whether the value of centroid measurement equipment be, reliably premise and the basis of its reliable test result, it is therefore necessary to barycenter measurement device is calibrated.
For a long time, barycenter measurement device is calibrated all adopting master body, namely to the given solid with regular shape, it is assumed that its geometric center is barycenter, adopts this barycenter standard that barycenter measurement device is calibrated.
In the calibration process of certain centroid measurement equipment, measurement result is bigger with design theory value deviation. By analysis, adopt the geometric center of regular shape solid as its barycenter, it assumes the even density that basis is the adopted material of regular shape solid, and in fact this assumed condition being false, whether uniform density of material is cannot measure in present stage, and there is bigger dispersibility, cause that the uncertainty that barycenter measurement device is calibrated by the method adopting master body is relatively big, be unsatisfactory for requirement.
Summary of the invention
It is an object of the invention to set up one have from seeking heart characteristic, and approach of clearly tracing to the source can be provided certainly seek heart barycenter calibrating installation and method, can be used for adopting the calibration of the centroid measurement equipment of multiple spot weight method.
One of the present invention is from seeking heart barycenter calibrating installation, and it is used for calibrating centroid measurement equipment, and it includes the safety guard resting on the ground, and described safety guard is with the 4 identical support posts arranged that are square; Treat that school centroid measurement equipment is arranged in the middle of 4 support posts;
Treating placement center coordination disk on the centroid measurement equipment of school, center coordination disk has several grooves, the latter half of force ball can be placed in any one above-mentioned groove, and the first half of force ball is exposed outside groove;
From seeking core structure centre for orthogonal thereto " ten " font supporting structure, the four end symmetries at " ten " character form structure are fixed up identical 4 supporting leg extended; Center lower surface at " ten " font support has arcuate groove;
It is all connected with 1 lever in the end of 4 supporting legs certainly seeking core structure, each lever loads counterweight respectively so that from seeking core structure levelness scalable in vertical both direction;
It is positioned at above center coordination disk from seeking core structure, and it is placed on force ball, namely it is positioned on force ball from the lower surface arcuate groove of " ten " the font support seeking core structure so that certainly seek the perpendicular acting groove location place at the center coordination disk being positioned at force ball place that makes a concerted effort of core structure.
As above a kind of from seeking heart barycenter calibrating installation, 4 support posts of its described safety guard are higher than treating school centroid measurement equipment; Can be placed on 4 support posts from 4 supporting legs seeking core structure.
One of the present invention is from seeking heart barycenter calibration steps, and it is used for calibrating centroid measurement equipment, and it comprises the steps:
A () places safety guard on the ground, described safety guard is with the 4 identical support posts arranged that are square; Treating that school centroid measurement equipment is arranged in the middle of 4 support posts, 4 support posts exceed treats school centroid measurement equipment;
B () is treating placement center coordination disk on the centroid measurement equipment of school, center coordination disk has several grooves, and the latter half of force ball can be placed in any one above-mentioned groove, and the first half of force ball is exposed at outside groove;
C () is certainly sought core structure and is positioned at above center coordination disk, certainly seek core structure centre for orthogonal thereto " ten " font supporting structure, and the four end symmetries at " ten " character form structure are fixed up identical 4 supporting leg extended; Arcuate groove is had in the lower surface center of " ten " font support;
It is all connected with 1 lever in the end of 4 supporting legs certainly seeking core structure, each lever loads counterweight respectively so that from seeking core structure levelness scalable in vertical both direction; When loading counterweight, it is placed on 4 support posts of safety guard from 4 supporting legs seeking core structure;
In a calibration process, it is placed on force ball from seeking core structure, namely it is positioned on force ball from the lower surface arcuate groove of " ten " the font support seeking core structure so that certainly seek the perpendicular acting groove location place at the center coordination disk being positioned at force ball place that makes a concerted effort of core structure; Now, depart from 4 support posts of safety guard from 4 supporting legs seeking core structure;
D the groove location centre coordinate value of the coordinate indicating value with the now center coordination disk that force ball is placed for the treatment of school centroid measurement equipment is contrasted by (), obtain error of coordinate.
Effect of the invention is that: adopt of the present invention from seeking heart barycenter calibrating installation, have from seeking cardiac function, can be used for adopting the calibration of the centroid measurement equipment of multiple spot weight method. Support post is to certainly seeking core structure and treating that school centroid measurement equipment plays a protective role, it is prevented that calibrator (-ter) unit produces accidental injury to by calibration equipment. Counterweight is loaded so that from seeking core structure levelness scalable in vertical both direction on the end lever of 4 supporting legs seeking core structure.
Accompanying drawing explanation
Fig. 1 is that one of the present invention is from seeking heart barycenter calibrating installation schematic diagram;
Fig. 2 is for from seeking core structure contact position schematic diagram;
Fig. 3 centroid position schematic diagram;
Fig. 4 is barycenter reference value and indicating value coordinate comparison chart;
Fig. 5 is each point x, y-coordinate Error Graph.
In figure: 1 lever, 2 counterweights, 3 center coordination disks, 4 treat school centroid measurement equipment, and 5 from seeking core structure, 6 safety guards; 7 force balls; 8 support posts.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, certainly one of the present invention is sought heart barycenter calibrating installation to be further described.
Embodiment 1
As it is shown in figure 1, one of the present invention is from seeking heart barycenter calibrating installation, it includes safety guard 6, certainly seeks core structure 5, treats school centroid measurement equipment 4, center coordination disk 3, counterweight 2 and lever 1 etc.
Safety guard 6 rest on the ground, and safety guard 6 is with the 4 identical support posts 8 arranged that are square. Treat that school centroid measurement equipment 4 is arranged in the middle of 4 support posts 8.
Treating placement center coordination disk 3 on school centroid measurement equipment 4, center coordination disk 3 has several grooves (such as 3,10 or 20), the latter half of force ball 7 can be placed in any one above-mentioned groove, the first half of force ball 7 is exposed outside groove, as shown in Figure 2.
From seeking core structure 5 centre for orthogonal thereto " ten " font supporting structure, the four end symmetries at " ten " character form structure are fixed up identical 4 supporting leg extended; Center lower surface at " ten " font support has arcuate groove.
It is all connected with 1 lever 1 in the end of 4 supporting legs certainly seeking core structure 5, each lever 1 loads counterweight 2 respectively so that from seeking the core structure 5 levelness scalable in vertical both direction.
It is positioned at above center coordination disk 3 from seeking core structure 5, and it is placed on force ball 7, as shown in Figure 2, namely it is positioned on force ball 7 from the lower surface arcuate groove of " ten " the font support seeking core structure 5 so that certainly seek the perpendicular acting groove location place at the center coordination disk 3 being positioned at force ball 7 place that makes a concerted effort of core structure 5.
4 support posts 8 of above-mentioned safety guard 6 are higher than treating school centroid measurement equipment 4; Can be placed on 4 support posts 8 from 4 supporting legs seeking core structure 5.
Embodiment 2
One of the present invention is from seeking heart barycenter calibration steps, and it is used for calibrating centroid measurement equipment 4, and as depicted in figs. 1 and 2, it comprises the steps:
A () places safety guard 6 on the ground, described safety guard 6 is with the 4 identical support posts 8 arranged that are square; Treating that school centroid measurement equipment 4 is arranged in the middle of 4 support posts 8,4 support posts 8 exceed treats school centroid measurement equipment 4;
B () is treating placement center coordination disk 3 on school centroid measurement equipment 4, center coordination disk 3 has several grooves, and the latter half of force ball 7 can be placed in any one above-mentioned groove, and the first half of force ball 7 is exposed at outside groove;
C () is certainly sought core structure 5 and is positioned at above center coordination disk 3, certainly seek core structure 5 centre for orthogonal thereto " ten " font supporting structure, and the four end symmetries at " ten " character form structure are fixed up identical 4 supporting leg extended; Arcuate groove is had in the lower surface center of " ten " font support;
It is all connected with 1 lever 1 in the end of 4 supporting legs certainly seeking core structure 5, each lever 1 loads counterweight 2 respectively so that from seeking the core structure 5 levelness scalable in vertical both direction; When loading counterweight 2, it is placed on 4 support posts 8 of safety guard 6 from 4 supporting legs seeking core structure 5;
In a calibration process, it is placed on force ball 7 from seeking core structure 5, namely it is positioned on force ball 7 from the lower surface arcuate groove of " ten " the font support seeking core structure 5 so that certainly seek the perpendicular acting groove location place at the center coordination disk 3 being positioned at force ball 7 place that makes a concerted effort of core structure 5; Now, depart from 4 support posts 8 of safety guard 6 from 4 supporting legs seeking core structure 5;
D the groove location centre coordinate value of the coordinate indicating value with the now center coordination disk 3 that force ball 7 is placed for the treatment of school centroid measurement equipment 4 is contrasted by (), obtain error of coordinate. Fig. 4 show barycenter reference value (the groove location centre coordinate value of the center coordination disk 3 that force ball 7 is placed) that centroid measurement equipment 4 coordinate indicating value and the present invention the provide distribution situation under the same coordinate system, and single-point x coordinate error and y-coordinate error are as shown in Figure 5.
The inventive method operation principle is as follows: when, after all counterweights of loaded, comprising centroid position design �� x position place below support force point of " ten " font support and counterweight entirety, as shown in Figure 3. Thinking by device " barycenter falls ", guarantee that mounting system is under small stress unbalanced state, mounting system makes up to poised state by self-deflection, mounting system is not caused to be toppled over, miniweights now by four levers loads, and mounting system can be made to keep horizontal equilibrium state in vertical both direction. With the two-dimentional visual angle simplified, as shown in Figure 3, when the lever system brachium with characteristic stable equilibrium shown on figure not etc., or the quality on both sides is not etc., or although brachium is equal, quality is equal, but when the lever system moment about point of support caused due to Density inhomogeneity does not wait, lever system can nature deflection, until moment about point of support is equal. Owing to lever system has been designed to be rigidly connected, the center of gravity haveing suffered lever system finally falls within the underface of fulcrum, owing to barycenter overlaps with center of gravity near the earth, therefore, as long as lever system is rigidly connected, and having characteristic stable equilibrium, this lever system just has from seeking cardiac function.
Claims (3)
1. certainly seek heart barycenter calibrating installation for one kind, it is used for calibrating centroid measurement equipment (4), it is characterized in that: this device includes the safety guard (6) resting on the ground, described safety guard (6) is with the 4 identical support posts (8) arranged that are square; Treat that school centroid measurement equipment (4) is arranged in the middle of 4 support posts (8);
Center coordination disk (3) is placed treating that school centroid measurement equipment (4) is upper, center coordination disk has several grooves on (3), the latter half of force ball (7) can be placed in any one above-mentioned groove, and the first half of force ball (7) is exposed outside groove;
From seeking core structure (5) centre for orthogonal thereto " ten " font supporting structure, the four end symmetries at " ten " character form structure are fixed up identical 4 supporting leg extended; Center lower surface at " ten " font support has arcuate groove;
1 lever (1) it is all connected with in the end of 4 supporting legs certainly seeking core structure (5), each lever (1) loads counterweight (2) respectively so that from seeking the core structure (5) levelness scalable in vertical both direction;
It is positioned at center coordination disk (3) top from seeking core structure (5), and it is placed in force ball (7), namely it is positioned in force ball (7) from the lower surface arcuate groove of " ten " the font support seeking core structure (5) so that certainly seek the perpendicular acting groove location place at the center coordination disk (3) being positioned at force ball (7) place that makes a concerted effort of core structure (5).
2. one according to claim 1 is from seeking heart barycenter calibrating installation, it is characterised in that: 4 support posts (8) of described safety guard (6) are higher than treating school centroid measurement equipment (4); Can be placed on 4 support posts (8) from 4 supporting legs seeking core structure (5).
3., from seeking a heart barycenter calibration steps, it is used for calibrating centroid measurement equipment (4), it is characterised in that: the method comprises the steps:
A () places safety guard (6) on the ground, described safety guard (6) is with the 4 identical support posts (8) arranged that are square; Treating that school centroid measurement equipment (4) is arranged in the middle of 4 support posts (8), 4 support posts (8) exceed treats school centroid measurement equipment (4);
B () is treating school centroid measurement equipment (4) upper placement center coordination disk (3), center coordination disk has several grooves on (3), the latter half of force ball (7) can be placed in any one above-mentioned groove, and the first half of force ball (7) is exposed at outside groove;
C () is certainly sought core structure (5) and is positioned at center coordination disk (3) top, from seeking core structure (5) centre for orthogonal thereto " ten " font supporting structure, the four end symmetries at " ten " character form structure are fixed up identical 4 supporting leg extended; Arcuate groove is had in the lower surface center of " ten " font support;
1 lever (1) it is all connected with in the end of 4 supporting legs certainly seeking core structure (5), each lever (1) loads counterweight (2) respectively so that from seeking the core structure (5) levelness scalable in vertical both direction; When loading counterweight (2), it is placed on 4 support posts (8) of safety guard (6) from 4 supporting legs seeking core structure (5);
In a calibration process, it is placed in force ball (7) from seeking core structure (5), namely it is positioned in force ball (7) from the lower surface arcuate groove of " ten " the font support seeking core structure (5) so that certainly seek the perpendicular acting groove location place at the center coordination disk (3) being positioned at force ball (7) place that makes a concerted effort of core structure (5); Now, depart from 4 support posts (8) of safety guard (6) from 4 supporting legs seeking core structure (5);
D the groove location centre coordinate value of the center coordination disk (3) that the coordinate indicating value treating school centroid measurement equipment (4) is placed with the ball (7) that now exerts a force is contrasted by (), obtain error of coordinate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410635838.8A CN105628302B (en) | 2014-11-05 | 2014-11-05 | It is a kind of to seek heart barycenter calibrating installation and method certainly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410635838.8A CN105628302B (en) | 2014-11-05 | 2014-11-05 | It is a kind of to seek heart barycenter calibrating installation and method certainly |
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| CN105628302A true CN105628302A (en) | 2016-06-01 |
| CN105628302B CN105628302B (en) | 2017-11-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007790A (en) * | 2018-01-05 | 2018-05-08 | 沈阳建筑大学 | A kind of assembled girder steel monolithic stability experiment load loading device and method |
| CN108362439A (en) * | 2017-11-09 | 2018-08-03 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of standardized centroid exemplar centroid position two-dimentional measuring device and measurement method |
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| US20110036166A1 (en) * | 2009-08-14 | 2011-02-17 | Lenz Michael A W | Method and apparatus for in situ unbalance and corrective balance determination for a non-vertical axis rotating assembly |
| CN102155887A (en) * | 2010-12-23 | 2011-08-17 | 哈尔滨工业大学 | Method for measuring flexibility of mass centre |
| CN102692264A (en) * | 2012-05-14 | 2012-09-26 | 西北工业大学 | Test bench and test method for mass, position of center of mass and rotational inertia |
| CN203758689U (en) * | 2013-11-25 | 2014-08-06 | 哈尔滨飞机工业集团有限责任公司 | Helicopter standard blade parameter calibrating device |
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2014
- 2014-11-05 CN CN201410635838.8A patent/CN105628302B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110036166A1 (en) * | 2009-08-14 | 2011-02-17 | Lenz Michael A W | Method and apparatus for in situ unbalance and corrective balance determination for a non-vertical axis rotating assembly |
| CN102155887A (en) * | 2010-12-23 | 2011-08-17 | 哈尔滨工业大学 | Method for measuring flexibility of mass centre |
| CN102692264A (en) * | 2012-05-14 | 2012-09-26 | 西北工业大学 | Test bench and test method for mass, position of center of mass and rotational inertia |
| CN203758689U (en) * | 2013-11-25 | 2014-08-06 | 哈尔滨飞机工业集团有限责任公司 | Helicopter standard blade parameter calibrating device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362439A (en) * | 2017-11-09 | 2018-08-03 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of standardized centroid exemplar centroid position two-dimentional measuring device and measurement method |
| CN108362439B (en) * | 2017-11-09 | 2019-10-18 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of standardized centroid exemplar centroid position two-dimentional measuring device and measurement method |
| CN108007790A (en) * | 2018-01-05 | 2018-05-08 | 沈阳建筑大学 | A kind of assembled girder steel monolithic stability experiment load loading device and method |
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| CN105628302B (en) | 2017-11-28 |
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